
Anyway, my question is what does CRS actually do? In the past i've boiled the liquor to death (1 hour), added salt (NaCl), and syphoned it off when cool to leave the chalk behind...i'm in a hard water area (292 mgl CaCO3).
Is this a magic ingredient that means i just need to boil to sterilise and release any chlorine etc then add to produce an acceptable liquor for a bitter?